diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-12-26 19:27:26 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-12-26 19:27:26 +0000 |
| commit | d3db2bd80c8ee9a0cb2679ba341892e620a2676e (patch) | |
| tree | 4699a740828ca21566db9717a70c03068376da46 /src/backend/executor/nodeSeqscan.c | |
| parent | 923ec1a19f5839dfb7628ad20521aa38f25b4e8f (diff) | |
Repair bug #2839: the various ExecReScan functions need to reset
ps_TupFromTlist in plan nodes that make use of it. This was being done
correctly in join nodes and Result nodes but not in any relation-scan nodes.
Bug would lead to bogus results if a set-returning function appeared in the
targetlist of a subquery that could be rescanned after partial execution,
for example a subquery within EXISTS(). Bug has been around forever :-(
... surprising it wasn't reported before.
Diffstat (limited to 'src/backend/executor/nodeSeqscan.c')
| -rw-r--r-- | src/backend/executor/nodeSeqscan.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/executor/nodeSeqscan.c b/src/backend/executor/nodeSeqscan.c index 074a52731c0..5d6c3ed2850 100644 --- a/src/backend/executor/nodeSeqscan.c +++ b/src/backend/executor/nodeSeqscan.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/nodeSeqscan.c,v 1.37 2002/09/04 20:31:18 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/nodeSeqscan.c,v 1.37.2.1 2006/12/26 19:27:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -318,6 +318,8 @@ ExecSeqReScan(SeqScan *node, ExprContext *exprCtxt, Plan *parent) scanstate = node->scanstate; estate = node->plan.state; + scanstate->cstate.cs_TupFromTlist = false; + /* If this is re-scanning of PlanQual ... */ if (estate->es_evTuple != NULL && estate->es_evTuple[node->scanrelid - 1] != NULL) |